Steven teaches his son Payton that shooting up dad's property comes with a big price, while the rest of the crew tracks down hard-to-find collectables from the days of Al Capone. Meanwhile, Gran-Pa Biff has some bad news for the owner of a seemingly rare weapon, and two excitable brothers blast their ratty old fishing craft into boat heaven.
The Sumners stage an epic Civil War recreation that they have to build from scratch. Meanwhile, the Knob Creek crew is called upon to settle a bet, while Gran-pa Biff has Steven examine and test-fire a very valuable rifle.
Steven puts together a massive experience for a customer looking to take out an army of zombies. Steven also sells a replica of a very cool "pirate" gun, the legendary blunderbuss. Meanwhile, Kenny checks out a rare German competition shooting rifle, wondering if he blew his money or got a real steal in the bargain.
Steven goes ballistic upon learning daughter Stephanie's new boyfriend has yet to touch a gun. Steven forces Stephanie's guy Ben into an awkward session of hunting, followed by a pro wrestling match where the overzealous dad escorts the couple as both chaperone and color commentator. After dealing with an eccentric gun owner, Chad and Payton buy a cane gun for Gran-pa Biff. Chad also deals with a farmer needing a four-wheeled hunting vehicle, leading to an explosive test-drive that takes down a herd of stuffed animals.
Steven helps a feuding couple rekindle their relationship by destroying their ugly furniture and by staging an explosive date out on the range.
Steven and Payton meet some guys who build cannons that shoot bowling balls; Grandpa hires a new girl to work the range.
Steven prepares his family for doomsday.
Steven, Chad and Payton create a home-alarm system; Biff screens applicants for the secretive Old Timers Club.
Steven and Chad persuade Biff to let them run the range for a week. Chad then begins to haggle over a perfect replica of a Soviet rifle.
Biff and Payton shoot targets, while Biff teaches him the difference between U.S. and German rifles used in World War II. Later, the Sumners host a gathering of gun enthusiasts.